Device for controlling the pitch of the blades of a rotorcraft r

Details Device for controlling the pitch of the blades of a rotorcraft r Device for controlling the pitch of the blades of a rotorcraft r

1995-10-06

1997-02-04

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Sustained ancillary movement of rotary working member

By actuator eccentric to rotation axis

416114, 416168R, B64C 1134

Patent

active

055991670

ABSTRACT:
The device for controlling the pitch of the blades of a rotor using a mechanism having swashplates includes an auxiliary plate mounted on the non-rotating plate of the mechanism and which is secured in terms of rotation to the rotating plate of this mechanism and, for each blade, an articulated link in series with the corresponding pitch rod to which it is articulated, and including at least one arm articulated to the rotating plate, each articulated link being controlled by a lever articulated to it and to the auxiliary plate which is off-centered to the desired value so that each of the control levers controls the itch of the corresponding blade by applying a bicyclic component to it, the amplitude and phase of which component depend on the eccentricity of the auxiliary plate as defined with respect to the non-rotating plate.

REFERENCES:
patent: 2611441 (1952-09-01), Slechta
patent: 2996122 (1961-08-01), Slechta
patent: 3308888 (1967-03-01), Arcidiacano

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